Windows App Certification Kit: Before you submit your app for certification and listing in the Windows Store, use the Windows App Certification Kit to test your app and make sure it's ready to go.
The Windows SDK includes the Windows App Certification Kit. You can use it to test your app for the Windows Store (for Windows 10, Windows 8.1 and Windows 8), and for the Windows 10, Windows 8.1, Windows 8, and Windows 7 Windows Certification program for desktop applications. The Windows SDK does not include a compiler or build environment.